Hey, that wa s REALLY long... just kidding!

Well, first of all you DO HAVE anxiety, let me tell you... but depression and axiety are two faces of the same coin.

The important thing to know here is: is your currect doc a psychiatrist? and the new one? Don't get fooled, you need a specialist, as you would search a cardiologist if you had heart disease. I see you are the typical person who ruminates endlessly about what the doc said or actually meant... I suggets that you find a GOOD psychiatrist, and then take whatever he says with absolute trust.
Please let me be frank: my humble opinion is that your racing heart has nothing to do with Effexor. You fear that it may make you nervous, and you get nervous out of suggestion. Please don't think I want to dismiss you as "it's all in your mind", but how could effexor (or anyother antidepressant) strike that way after just a few administrations?